Improved man-hole plate for tannery stuffing-wheel



tluitml teee HENRY SMITH, JR., .OF MILWAUKEE, WISCONSIN.

Leiters Patent No. 100,930, dated Match 15, 1870.

The Schedule referred to in these Letters Patent and making part of the same.

T o all whom it may concerny Be it known that I, HENRY SMITH, Jr., of the city and county of Milwaukee, and State of Wisconsin, have invented a new and useful Improvement in Man-Hole Plates for Tannery Stuling-Wheel; andl do hereby declare that the following is a full, clear, and exact description thereof, which will enable those skilled in the art to make and use the same, reference being had to the accompanying drawings forming part of this specification, in which- Figure l is a front view;

Figure 2, a sectional view in the line X X, fig. 1; Figure 3, a` hack-side View of the covering-plates; and

Figure 4, a back-side view of the rim, which is covered by the covering-plate.

Similar letters of reference in each of the figures indicate corresponding parts.

The nature and object of my invention is to provide for shutting np tight the opening into astung-wheel for tannery, and also for fastening up man-holes in boilers and other places where there is pressure of steam or water.

A is the head ofthe wheel or cylinder or other surface, in which the inail-hole plate is inserted.

B, the inner rim attached to the head ol' the wheel or cylinder.

C, the outer covering-plate.

I), lugs on the inner rim.

Operation.

rlhe inner rim B being fastened to any place where it is necessary to keep it tight, the cover C is pnt on and turned a little, and they will be forced together so tight that nothing can pass through. This rini B and the cover C is finished up so as to [it together close.

C la'i'ms.

I claim as my invention- 1. A man-hole plate, with the rim B, covering-plate C, and lugs D and E, substantially as described.

2. A man-hole plate, when constructed with rim B, covering-plate C, with the lugs D and E, raised projections F with holes in them, and packing H, sul4 wstantially as described.

HENRY SMITH, J R. Witnesses:

W. M. HoRSoR, J. B. SMITH. 

